Ovarian Pathology Flashcards
What type of ovarian cyst is due to non rupture of the dominant follicle?
Follicular
What blood marker would raise your suspicion of ovarian cancer?
CA125
A 34 year old lady present to a&e with sudden onset abdominal pain that came on when she was running and has been getting increasingly worse over the last 2 hours. She describes the pain as sharp and stabbing. She says she has had some episodes of stabbing pain in the past but they have resolved after 30 mins, unlike this.
Ovarian cyst torsion
Describe how a follicular ovarian cyst arises
Forms when ovulation doesn’t occur
Follicle doesn’t rupture but grows until it becomes a cyst.
Thin walled and lined by granulosa cells
Describe what you should so if you find a pelvic mass on examination of a 54 year old women.
- Blood sample for tumour markers (CA 125)
- US scan
- Use age, menopausal status and US score to calculate risk of malignancy index
What three factors are taken into consideration when making a risk of malignancy index score?
CA125 value
Menopausal score
US score
How is the RMI in ovarian cancer calculated?
CA125 value x Menopausal score x US score
A score above what value on the RMI suggests high risk?
200
What is the name given to an ovarian metastatic tumour from gastric cancer?
Krukenberg tumour
On what chromosome is the mutation for the BRCA1 gene found?
17
On what chromosome is the mutation for the BRCA2 gene found?
13
What is the lifetime risk of someone with a BRCA 1 mutation developing ovarian cancer?
30 - 60%
What is the lifetime risk of someone with a BRCA 2 mutation developing ovarian cancer?
20%
What is the most common benign epithelial tumour of the ovary?
Serous cystadenoma
What are the three classifications of epithelial ovarian tumours?
Benign
Borderline
Malignant
On pathology of an ovarian cyst you see a simple cystic form with a smooth surface and smooth lining. there is no cytological abnormalities and no excess proliferation. Is this a benign, borderline or malignant epithelial tumour?
Benign
On pathology of an ovarian cyst you see cytological abnormalities and excess proliferation. There is no stromal invasion Is this a benign, borderline or malignant epithelial tumour?
Borderline
On pathology of an ovarian cyst you see cytological abnormalities, excess proliferation and stromal invasion Is this a benign, borderline or malignant epithelial tumour?
Malignant
Where does ovarian high grade serous cacrinoma usually originate?
Fallopian tubes
What is the precursor lesion for high grade serous cacrinoma?
Serous tubal carcinoma
What is the precursor for low grade serous carcinoma?
Serous borderline tumour
List the 5 types of epithelial ovarian tumours
Serous Mucinous Endometrioid Clear cell Brenner (undifferentiated)
What 2 conditions are associated with endometrioid and clear cell carcinoma of the ovary?
Endometriosis of the ovary
Lynch sydrome
What is a brenner tumour?
Ovarian tumour of transitional type epithelium. Usually benign